臭氧/微电解工艺对8种染料单独及混合配水的处理效能  

Degradation efficiency of eight kinds of dyes individually and in mixture in aqueous solution by ozone / micro electrolysis process

作　　者：董姣[1] 董文艺[1] 张先炳[1] 杨浩[1] 王宏杰[1] 

机构地区：[1]哈尔滨工业大学深圳研究生院,深圳518055

出　　处：《环境工程学报》2016年第4期1835-1841,共7页Chinese Journal of Environmental Engineering

摘　　要：采用臭氧/微电解工艺对8种不同发色结构染料单独配水的降解效能以及混合染料配水的工艺适宜参数进行了小试研究。结果表明,臭氧/微电解工艺对染料模拟废水处理效果良好,并具有普遍适用性。色度去除率达96.9%～99.9%,COD去除率在40%到80%之间不等,工艺对苯胺去除效果尤其明显,可达到不得检出的排放标准,染料的可生化性大大提高,B/C可从0.1以下上升到0.2以上,染料的降解符合一级反应动力学规律。对于50 mg/L的混合染料配水,较适宜的p H范围是8～10;臭氧投加速率是1.3 mg/（L·min）,停留时间25 min,臭氧投加量是30 mg/L。此外,色度去除效果与臭氧投加量有关而受臭氧投加速率影响较小,但COD的去除效果随臭氧投加速率的增大而提高。The degradation efficiencies of simulated wastewater of eight dyes（ individually and in mixtures）with different structures treated with an ozone / micro electrolysis process were studied. The results revealed that all eight dyes could be effectively removed by the ozone / micro electrolysis process. Color removal rates of all simulated wastewater samples were higher than 96. 9%,and COD removal rates were between 40% and 80%. In particular,this process showed excellent aniline（ which was produced at the same time as dye degradation） removal performance,and aniline cannot be detected in treated wastewater. Furthermore,the biodegradability of the simulated wastewater was improved from lower than 0. 1（ before treatment） to higher than 0. 2（ after treatment）.The dye decolorization reaction followed first-order kinetics. For simulated wastewater with 50 mg / L mixed dyes,a p H from 8 to 10 was suitable; the ozone dosage was 30 mg / L with a dosage rate of 1. 3 mg /（ L·min） and the reaction time was 25 min. In addition,color removal efficiency was affected by the total ozone added,but COD removal efficiency increased at higher ozone dosage rates.

关 键 词：臭氧/微电解工艺 不同结构染料 脱色 可生化性 苯胺 

分 类 号：X703[环境科学与工程—环境工程]